How many dipeptides can be made using the 20 standard amino acids?
A) 20
B) 40
C) 200
D) 400
D
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The sediments that occur on the slope, rise, and deep ocean floor and originate in the ocean are called:a
neritic sediments b. pelagic sediments c. terrigenous sediments d. well-sorted sediments
Tropical wet climates
A) are seasonally influenced by the ITCZ. B) are found primarily between 10 and 20 degrees away from the equator. C) usually have convectional precipitation. D) have low humidity.
Which one of the following has been declining globally over the past several decades?
A) Nitrous oxide levels in the troposphere B) Methane levels in the troposphere C) Mean global temperature D) pH of the world's oceans
The present-day tilt of Earth's axis of rotation is 23.5ยบ. What would be the result of less tilt, as shown here?
A. more hours of sunlight on the equator, resulting in warmer global temperatures B. high latitudes would receive less direct sunlight during the summer, causing cooler temperatures C. a decrease in glaciers D. All of these choices are correct.